The game doesn't seem to be seeing my Xbox 360 wired controller at all. The controller works fine in other games, and I don't have any third-party controller apps/drivers installed. I've tried switching USB ports and adjusting the controller order in Game Controllers, but it didn't make a difference.

Help!

I'm on Windows 10 64-bit and playing the GOG.com version. I installed via the download installer, but I also used Galaxy to verify game files and it reported everything OK.

That's unusual. Is the controller displaying it is set as "player 1"? (top left light in the green ring). Did you change ports while the game was running or did you change the ports and re-open the game?